I want to become a monk, but I want to aim for another job

I saw it.
In conclusion, it changes depending on the denomination, but almost 100% is OK.

I myself am an engineer and a monk.
There are business owners around, and there is no end to the list of writers, speakers, NPOs, entertainers, etc.
If you go back in time, there are businessmen like Kukai.
Monks are in the category where time is relatively free, so they can balance it.
I want them to make use of that wonderful talent in engineering and Buddhism.

Why are part-time jobs allowed?
This is because the aims of Buddhism and engineering are consistent.
There is a strong sense of occupation in Japan, but originally Buddhism was created from living and thinking about getting away from suffering.
And engineering exists to resolve the world's inconveniences and dissatisfaction.
So engineering and Buddhism go well together.
If you can make use of your engineering knowledge to make life easier for many people, then that should be something you should be proud of as a monk.

By all means, please do your best towards your ideals.

“A person who is not in the temple family becomes a monk and opens a temple while taking up another occupation”
“Not bound by the shape of a normal temple, but in a small shape like a missionary center”
“A case where a person from a “temple family” opens a temple while holding another job”

There's no reason to prevent this.

However, in particular, the Jodo Shinshu sect is called “at-home Buddhism,” and its teachings are not necessarily in the temple. If your Nembutsu voice resonates in every place in your life, on the stage where you are active, there is an opportunity to listen to the Dharma, and it can become a site of missionary work, and it can also be a Nembutsu dojo.

However, if you really want to obtain a [religious legal personality], this will be a very high hurdle. Also, once obtained, of course, there are parts where preferential treatment is given, but various restrictions such as complicated obligations and serious responsibilities occur even more than that.

“Gago Temple” (Nuga-ji Temple) in Yomitan Village, Okinawa might be helpful for this.

You say you are doing engineering, have woken up to Buddhism, and want to become a monk. It's very precious.

My dream when I was in the first year of elementary school was “I want to be an electronics shop.” Then, to my father, who was the chief priest, “A monk can do an electronics shop, but an electronics shop can't become a monk.” With that nonsense, “I want to be a monk.” My life was rewritten by, and I wanted to go to the Faculty of Engineering even when I was in high school. But as a hobby, I fell in love with radios and computers, and my parents forgave me for that. I've been addicted to it ever since the internet was created. Aside from talking about myself, originally Buddhism did not allow part-time work.

However, with the passage of time, it has come to be recognized. In Japan, Shinran Shonin probably created that trend. Originally, farm work was also prohibited because it might kill insects in the soil. It changed from Buddhism where people just meditate while staying in a Buddhist temple to Buddhism due to sentient beings.

Also, realistically, there are a lot of monks who work part-time, or rather, most of them. The temple's economic situation is significant, but in the past, there were many teachers and public servants, but since the ban on part-time work for public servants became stricter, the image is that there are many nursing workers.

However, building a new temple is a high hurdle. Or rather, the reason it's becoming difficult isn't because they suddenly acquire religious corporation status or try to make a box like an existing temple? As Zorakuin said, there are high hurdles to obtaining religious corporation status, such as having your own property.
There are cases where everyone is a Jodo Shinshu independent temple. (The book is out, and it's very interesting.)

It would be possible to build a temple (something like that) as an individual business, and I think it will increase in the future. That's because there isn't much need for a box called a temple anymore. That's because people called monks will become important from now on.

At the beginning of the temple, Kamakura New Buddhism was not a temple at first. It began when monks lived in thatched huts and dojos and preached the Dharma in places where they were obsessed with Buddhism.

When it comes to turning ordinary homes into missionaries, I think Christianity has taken the lead. They'll put a cross on a normal house and turn it into a church.

There are few in Buddhism, but there are cases where one room in an apartment is used as a temple. It is a temple of the Tendai sect, but it must have been a temple that did not have the status of a religious corporation. (I forgot the name)

Please see below.
https://www.bdk.or.jp/bdk/founder.html

I'm sure your experience will be put to good use.

Incidentally, I'm also a science student and I'm from home.